simd

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Where can I find an official reference listing the operation of SSE intrinsic functions?

Is开发者_Python百科 there an official reference listing the operation of the SSE intrinsic functions for GCC, i.e. the functions in the <*mmintrin.h> header files?As well as Intel\'s vol.2 PDF m[详细]

2023-03-30 04:11 分类：问答
SSE: _mm_mul_ps won't multiply 10001 with 10001 correctly but works fine for 10000 with 10000

I have a very simple program to multiply four numbers. It works fine when each of them is 10000 but does not if I change them to 10001. The result[详细]

2023-03-28 07:08 分类：问答
Fastest way to do horizontal SSE vector sum (or other reduction)

Given a vector of three (or four) floats. What is the fastest way to sum them? Is SSE (movaps, shuffle, add, movd) always faster than x87? Are the horizontal-add instructions in SSE3 worth it?[详细]

2023-03-27 06:58 分类：问答
Typecasting a JNI Java array to NEON

I\'m sure people do this all the time, but I\'m having a hard time here. I\'m passing an array of floats to a JNI function, but t开发者_如何学JAVAhen I\'m intended to use NEON SIMD capabilities of ARM[详细]

2023-03-26 19:18 分类：问答
Free/open source C/C++ library of vectorized math functions? [closed]

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.[详细]

2023-03-25 09:21 分类：问答
How do I know if a vector function (SIMD) really worked on multiple objects at a time?

I am trying to understand whether my compiler interprets my vector notation as single objects (equivalent to a for loop) or works on multiple data at a time.[详细]

2023-03-24 14:14 分类：问答
Troubles introducing SIMD commands into the code

I have a basic calculation function that I apply on each item in an array. This function does more then just summing two vectors.[详细]

2023-03-24 07:37 分类：问答
Multiply Large Complex Number Vector by Scalar efficiently C++

I\'m currently trying to most efficiently do an in-place multiplication of an array of complex numbers (memory aligned the same way the std::complex would be but currently using our own ADT) by an arr[详细]

2023-03-24 03:25 分类：问答
How to compare two vectors using SIMD and get a single boolean result?

I have two vectors of 4 integers each and I\'d like to use a SIMD command to compare them (say generate a result vector where each ent开发者_JAVA技巧ry is 0 or 1 according to the result of the compari[详细]

2023-03-24 00:56 分类：问答
Reference manual/tutorial for x86 SIMD intrinsics? [closed]

Closed. This question is seeking recommendations for books, tools, software libraries, and more. It does not meet Stack Overflow guidelines. It is not currently accepting answers.[详细]

2023-03-23 17:58 分类：问答